Continuity Cameo: On the superhero side of things, the X-Men, the Avengers and even the Scarlet Spider appear during Season 2. There's a shot of Juggernaut's hand emerging from the Hudson river in the Hulk episode (possibly after Gladiator threw him in there), and we get brief glimpses of Speedball, Darkhawk and Namorita as the Silver Surfer flies around in the opening of "Doomsday".

Crossover: The Fantastic Four appeared in the Incredible Hulk episode, "Fantastic Fortitude," though only the Thing has a major role. Doctor Doom (with Simon Templeman returning) appeared in "Doomed" and "Hollywood Rocks."

Iron Man makes a voiceless cameo in "To Battle the Living Planet." This is the only time the leads of the "Marvel Action Hour" shows had any interaction on-screen.

Disappeared Dad: Well, step-dad, actually. The Puppet Master and Alicia got into a brief fight when he was about to crown a puppet version of himself to become king of the world. He was accidentally thrown out the window the same time the crown fell off the puppet. By the time the Fantastic Four came to her rescue, the Puppet Master "seemed to have wiped off the face of the earth."

Sue and Johnny's own father. The elder Storm was involved in an altercation that led to another man's death. It wasn't cold-blooded murder, but he went into hiding out of fear. He only returned to perform life-saving surgery on Sue, but subsequently was arrested. He was later killed as part of a Skrull plot.

Disney Death: The Thing in "Nightmare in Green." Doctor Doom in "Doomsday," who was revealed to be alive in The Incredible Hulk episode "Doomed."

Distant Reaction Shot: Of Johnny's supernova attack in "Doomsday", which can be seen from the upper atmosphere.

Sue: This is pretty uninspired. The big, bad Doctor Doom kidnapping me to lure the Fantastic Four to your wretched little island?Doctor Doom: Yes, I'm so sorry to involve you in the time-worn damsel-in-distress cliche, Mrs Richards. I fear the only thing missing is the onrushing train. However, sometimes expediency outweighs originality.

Enemy Mine: To stop Ego the Living Planet, Reed and Thor go to the guy who attached his rockets to him in the first place - Galactus.

Mugging the Monster: A couple of guys swipe Alicia's purse in the Hulk episode, apparently not noticing the giant orange guy in the trenchcoat sitting next to her.

Never Recycle Your Schemes: Averted - the Grand Finale involves Doom recycling his "steal the Silver Surfer's power" plot from season one, although he makes sure that Galactus is a long way away this time.

Tear Jerker: The Thing's Disney Death after being beaten senseless by The Hulk in "Nightmare In Green". The Hulk feels guilty for making Alicia cry.

In "And A Blind Man Shall Lead Them," the four lose their powers in a nuclear explosion and Ben is overjoyed to be normal again. However, he is forced to reclaim his powers to save the team and Daredevil from Doctor Doom - ruining his plans for a normal life with Alicia. Poor guy even crushes the ring he was going to propose with.

Unstoppable Rage: The Thing to Doctor Doom in "And A Blind Man Shall Lead Them" (see Tear Jerker above for why). Doom hits him with a device that magnifies gravity's effect on him - and is genuinely terrified when Ben gets right back up and keeps attacking. He even crushes Doom's hands, which are shown to be in bandages in his next appearance half a season later.

What Could Have Been: Plans for a third season included Sue's pregnancy (with She-Hulk or Medusa filling up the vacancy) and the return of the Sub-Mariner.

And probably we've seen the return of Puppet Master, and find out where he's been.